Method of making ternary piezoelectric crystals
US7972527B2 · kind B2 · utility
3Cited by
5References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 31, 2008 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Oct 4, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/8548
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A ternary single crystal relaxor piezoelectric grown from a novel melt using the Vertical Bridgeman method. The ternary single crystals are characterized by a Curie temperature, Tc, of at least 150° C. and a rhombohedral to tetragonal phase transition temperature, Trt, of at least about 110° C. The ternary crystals further exhibit a piezoelectric coefficient, d33, in the range of at least about 1200-2000 pC/N.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.